A very simple implementation of the Tsunami PCI interface chips. More...

#include <tsunami_pchip.hh>

Inheritance diagram for TsunamiPChip:

Public Types
typedef TsunamiPChipParams	Params

Public Types inherited from PioDevice
typedef PioDeviceParams	Params

Public Types inherited from MemObject
typedef MemObjectParams	Params

Public Types inherited from ClockedObject
typedef ClockedObjectParams	Params
	Parameters of ClockedObject. More...

Public Types inherited from SimObject
typedef SimObjectParams	Params

Public Member Functions
	TsunamiPChip (const Params *p)
	Register the PChip with the mmu and init all wsba, wsm, and tba to 0. More...

const Params *	params () const

void	serialize (CheckpointOut &cp) const override
	Serialize an object. More...

void	unserialize (CheckpointIn &cp) override
	Unserialize an object. More...

Tick	read (PacketPtr pkt) override
	Pure virtual function that the device must implement. More...

Tick	write (PacketPtr pkt) override
	Pure virtual function that the device must implement. More...

AddrRangeList	getAddrRanges () const override
	Every PIO device is obliged to provide an implementation that returns the address ranges the device responds to. More...

Addr	dmaAddr (const PciBusAddr &addr, Addr pci_addr) const override
	Translate a PCI bus address to a memory address for DMA. More...

Public Member Functions inherited from GenericPciHost
	GenericPciHost (const GenericPciHostParams *p)

virtual	~GenericPciHost ()

Tick	read (PacketPtr pkt) override
	Pure virtual function that the device must implement. More...

Tick	write (PacketPtr pkt) override
	Pure virtual function that the device must implement. More...

AddrRangeList	getAddrRanges () const override
	Every PIO device is obliged to provide an implementation that returns the address ranges the device responds to. More...

Public Member Functions inherited from PciHost
	PciHost (const PciHostParams *p)

virtual	~PciHost ()

virtual DeviceInterface	registerDevice (PciDevice *device, PciBusAddr bus_addr, PciIntPin pin)
	Register a PCI device with the host. More...

Public Member Functions inherited from PioDevice
	PioDevice (const Params *p)

virtual	~PioDevice ()

const Params *	params () const

virtual void	init ()
	init() is called after all C++ SimObjects have been created and all ports are connected. More...

virtual BaseSlavePort &	getSlavePort (const std::string &if_name, PortID idx=InvalidPortID)
	Get a slave port with a given name and index. More...

Public Member Functions inherited from MemObject
const Params *	params () const

	MemObject (const Params *params)

virtual BaseMasterPort &	getMasterPort (const std::string &if_name, PortID idx=InvalidPortID)
	Get a master port with a given name and index. More...

Public Member Functions inherited from ClockedObject
	ClockedObject (const ClockedObjectParams *p)

const Params *	params () const

void	serialize (CheckpointOut &cp) const override
	Serialize an object. More...

void	unserialize (CheckpointIn &cp) override
	Unserialize an object. More...

Enums::PwrState	pwrState () const

std::string	pwrStateName () const

std::vector< double >	pwrStateWeights () const
	Returns the percentage residency for each power state. More...

void	computeStats ()
	Record stats values like state residency by computing the time difference from previous update. More...

void	pwrState (Enums::PwrState)

void	regStats () override
	Register statistics for this object. More...

Public Member Functions inherited from SimObject
const Params *	params () const

	SimObject (const Params *_params)

virtual	~SimObject ()

virtual const std::string	name () const

virtual void	loadState (CheckpointIn &cp)
	loadState() is called on each SimObject when restoring from a checkpoint. More...

virtual void	initState ()
	initState() is called on each SimObject when not restoring from a checkpoint. More...

virtual void	resetStats ()
	Reset statistics associated with this object. More...

virtual void	regProbePoints ()
	Register probe points for this object. More...

virtual void	regProbeListeners ()
	Register probe listeners for this object. More...

ProbeManager *	getProbeManager ()
	Get the probe manager for this object. More...

virtual void	startup ()
	startup() is the final initialization call before simulation. More...

DrainState	drain () override
	Provide a default implementation of the drain interface for objects that don't need draining. More...

virtual void	memWriteback ()
	Write back dirty buffers to memory using functional writes. More...

virtual void	memInvalidate ()
	Invalidate the contents of memory buffers. More...

void	serialize (CheckpointOut &cp) const override
	Serialize an object. More...

void	unserialize (CheckpointIn &cp) override
	Unserialize an object. More...

Public Member Functions inherited from EventManager
	EventManager (EventManager &em)

	EventManager (EventManager *em)

	EventManager (EventQueue *eq)

EventQueue *	eventQueue () const

void	schedule (Event &event, Tick when)

void	deschedule (Event &event)

void	reschedule (Event &event, Tick when, bool always=false)

void	schedule (Event *event, Tick when)

void	deschedule (Event *event)

void	reschedule (Event *event, Tick when, bool always=false)

void	wakeupEventQueue (Tick when=(Tick)-1)

void	setCurTick (Tick newVal)

Public Member Functions inherited from Serializable
	Serializable ()

virtual	~Serializable ()

void	serializeSection (CheckpointOut &cp, const char *name) const
	Serialize an object into a new section. More...

void	serializeSection (CheckpointOut &cp, const std::string &name) const

void	unserializeSection (CheckpointIn &cp, const char *name)
	Unserialize an a child object. More...

void	unserializeSection (CheckpointIn &cp, const std::string &name)

Public Member Functions inherited from Drainable
DrainState	drainState () const
	Return the current drain state of an object. More...

virtual void	notifyFork ()
	Notify a child process of a fork. More...

Public Member Functions inherited from Clocked
void	updateClockPeriod () const
	Update the tick to the current tick. More...

Tick	clockEdge (Cycles cycles=Cycles(0)) const
	Determine the tick when a cycle begins, by default the current one, but the argument also enables the caller to determine a future cycle. More...

Cycles	curCycle () const
	Determine the current cycle, corresponding to a tick aligned to a clock edge. More...

Tick	nextCycle () const
	Based on the clock of the object, determine the start tick of the first cycle that is at least one cycle in the future. More...

uint64_t	frequency () const

Tick	clockPeriod () const

double	voltage () const

Cycles	ticksToCycles (Tick t) const

Tick	cyclesToTicks (Cycles c) const

Protected Attributes
uint64_t	pctl
	Pchip control register. More...

uint64_t	wsba [4]
	Window Base addresses. More...

uint64_t	wsm [4]
	Window masks. More...

uint64_t	tba [4]
	Translated Base Addresses. More...

const AddrRange	pioRange

const Tick	pioDelay

Protected Attributes inherited from GenericPciHost
Platform &	platform

const Addr	confBase

const Addr	confSize

const uint8_t	confDeviceBits

const Addr	pciPioBase

const Addr	pciMemBase

const Addr	pciDmaBase

Protected Attributes inherited from PioDevice
System *	sys

PioPort	pioPort
	The pioPort that handles the requests for us and provides us requests that it sees. More...

Protected Attributes inherited from ClockedObject
Enums::PwrState	_currPwrState
	To keep track of the current power state. More...

Tick	prvEvalTick

Stats::Scalar	numPwrStateTransitions

Stats::Distribution	pwrStateClkGateDist

Stats::Vector	pwrStateResidencyTicks

Protected Attributes inherited from SimObject
const SimObjectParams *	_params
	Cached copy of the object parameters. More...

Protected Attributes inherited from EventManager
EventQueue *	eventq
	A pointer to this object's event queue. More...

Additional Inherited Members
Static Public Member Functions inherited from SimObject
static void	serializeAll (CheckpointOut &cp)
	Serialize all SimObjects in the system. More...

static SimObject *	find (const char *name)
	Find the SimObject with the given name and return a pointer to it. More...

Static Public Member Functions inherited from Serializable
static const std::string &	currentSection ()
	Get the fully-qualified name of the active section. More...

static void	serializeAll (const std::string &cpt_dir)

static void	unserializeGlobals (CheckpointIn &cp)

Static Public Attributes inherited from Serializable
static int	ckptCount = 0

static int	ckptMaxCount = 0

static int	ckptPrevCount = -1

Protected Member Functions inherited from GenericPciHost
Addr	pioAddr (const PciBusAddr &bus_addr, Addr pci_addr) const override
	Calculate the physical address of an IO location on the PCI bus. More...

Addr	memAddr (const PciBusAddr &bus_addr, Addr pci_addr) const override
	Calculate the physical address of a non-prefetchable memory location in the PCI address space. More...

Addr	dmaAddr (const PciBusAddr &bus_addr, Addr pci_addr) const override
	Calculate the physical address of a prefetchable memory location in the PCI address space. More...

virtual std::pair< PciBusAddr, Addr >	decodeAddress (Addr address)
	Decode a configuration space address. More...

void	postInt (const PciBusAddr &addr, PciIntPin pin) override
	Post an interrupt to the CPU. More...

void	clearInt (const PciBusAddr &addr, PciIntPin pin) override
	Post an interrupt to the CPU. More...

virtual uint32_t	mapPciInterrupt (const PciBusAddr &bus_addr, PciIntPin pin) const

Protected Member Functions inherited from PciHost
PciDevice *	getDevice (const PciBusAddr &addr)
	Retrieve a PCI device from its bus address. More...

const PciDevice *	getDevice (const PciBusAddr &addr) const
	Retrieve a PCI device from its bus address. More...

Protected Member Functions inherited from Drainable
	Drainable ()

virtual	~Drainable ()

virtual void	drainResume ()
	Resume execution after a successful drain. More...

void	signalDrainDone () const
	Signal that an object is drained. More...

Protected Member Functions inherited from Clocked
	Clocked (ClockDomain &clk_domain)
	Create a clocked object and set the clock domain based on the parameters. More...

	Clocked (Clocked &)=delete

Clocked &	operator= (Clocked &)=delete

virtual	~Clocked ()
	Virtual destructor due to inheritance. More...

void	resetClock () const
	Reset the object's clock using the current global tick value. More...

Detailed Description

A very simple implementation of the Tsunami PCI interface chips.

Definition at line 45 of file tsunami_pchip.hh.

Member Typedef Documentation

typedef TsunamiPChipParams TsunamiPChip::Params

Definition at line 62 of file tsunami_pchip.hh.

Constructor & Destructor Documentation

TsunamiPChip::TsunamiPChip ( const Params * p )

Register the PChip with the mmu and init all wsba, wsm, and tba to 0.

Parameters

p	pointer to the parameters struct

Definition at line 56 of file tsunami_pchip.cc.

References ArmISA::i, pctl, tba, ULL, wsba, and wsm.

Member Function Documentation

Addr TsunamiPChip::dmaAddr	(	const PciBusAddr &	addr,
		Addr	pci_addr
	)		const

overridevirtual

Translate a PCI bus address to a memory address for DMA.

Todo:

Andrew says this needs to be fixed. What's wrong with it?

Parameters

pci_addr PCI address to translate.

Returns: memory system address

Todo:: This currently is faked by just doing a direct read from memory, however, to be realistic, this needs to actually do a bus transaction. The process is explained in the tsunami documentation on page 10-12 and basically munges the address to look up a PTE from a table in memory and then uses that mapping to create an address for the SG page

Implements PciHost.

Definition at line 253 of file tsunami_pchip.cc.

References DMA_ADDR_MASK, DPRINTF, ArmISA::i, System::physProxy, PortProxy::readBlob(), PioDevice::sys, tba, ULL, wsba, and wsm.